First you need to install SSH on the remote PC's. You test the connection and make sure you are able to login. Google can help if you've not setup ssh before.
Then you can create a python script locally to execute commands over the ssh connection.
You'll probably want to look at either
Fabric -> http://docs.fabfile.org/en/1.8/
or
Paramiko -> http://www.paramiko.org/
Which will be able to run your commands.